Premium 1/4" Acoustic Foam Roll 250 sq Ft 5' x 50'- SoundProofing/Sound Deadening Acoustical Foam Sheet Barrier - Cross-Linked Closed-Cell Polymer Foam - Made in the USA! Huge 5' x 50' Roll! 250sq Ft - 2lb Per Cubic Foot Density - Made in the USA! 1/4" Thick for excellent sound dampening between two vibrating surfaces. For use in walls, ceilings, and floors (non-toxic) Best when used as one part of a multi-layered construction theme Made in USA